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A platform for research: civil engineering, architecture and urbanism
Lightweight ultrahigh-performance seawater and sea sand concrete and preparation method thereof
The invention discloses light ultrahigh-performance seawater and sea sand concrete and a preparation method thereof. The seawater and sea sand concrete is prepared from the following components in parts by mass: 31.74 to 36.90 parts of cement, 7.44 to 8.65 parts of fly ash, 7.84 to 9.11 parts of silica fume, 5.4 to 27.35 parts of pottery sand, 4.70 to 40.38 parts of sea sand, 4.43 to 5.53 parts of seawater, 0.74 to 0.92 part of a water reducing agent and 6.15 to 7.15 parts of copper-plated steel fiber. Coarse aggregates such as broken stones commonly used in existing concrete materials are removed, the pottery sand is adopted as the coarse aggregate and the fine aggregate, and the sea sand is adopted as the fine aggregate, so that the compactness and the integrity of the concrete are improved, the internal defects of the concrete are reduced, and the mechanical property of the concrete is improved; in addition, after the pottery sand is adopted to replace all the coarse aggregate and part of the fine aggregate, the density of the prepared seawater sea sand concrete is greatly reduced, the dead weight of a concrete structure is reduced, and therefore the seawater sea sand concrete can be applied to some large-span bridges or buildings sensitive to the dead weight of the structure.
本发明公开了一种轻质超高性能海水海砂混凝土及其制备方法。按质量份计，该海水海砂混凝土包括水泥31.74～36.90份，粉煤灰7.44～8.65份，硅灰7.84～9.11份，陶砂5.4～27.35份，海砂4.70～40.38份，海水4.43～5.53份，减水剂0.74～0.92份，镀铜钢纤维6.15～7.15份。本发明剔除了现有混凝土材料中常用的碎石等粗骨料，采用陶砂作为粗骨料和细骨料，海砂作为细骨料，有利于提高混凝土的密实度和整体性，减少了混凝土内部的缺陷，提高其力学性能；而且采用陶砂替代全部粗骨料和部分细骨料后，使得制备的海水海砂混凝土密度大幅降低，减小了混凝土结构的自重，从而能应用于一些对结构自重比较敏感的大跨度桥梁或者建筑物。
Lightweight ultrahigh-performance seawater and sea sand concrete and preparation method thereof
The invention discloses light ultrahigh-performance seawater and sea sand concrete and a preparation method thereof. The seawater and sea sand concrete is prepared from the following components in parts by mass: 31.74 to 36.90 parts of cement, 7.44 to 8.65 parts of fly ash, 7.84 to 9.11 parts of silica fume, 5.4 to 27.35 parts of pottery sand, 4.70 to 40.38 parts of sea sand, 4.43 to 5.53 parts of seawater, 0.74 to 0.92 part of a water reducing agent and 6.15 to 7.15 parts of copper-plated steel fiber. Coarse aggregates such as broken stones commonly used in existing concrete materials are removed, the pottery sand is adopted as the coarse aggregate and the fine aggregate, and the sea sand is adopted as the fine aggregate, so that the compactness and the integrity of the concrete are improved, the internal defects of the concrete are reduced, and the mechanical property of the concrete is improved; in addition, after the pottery sand is adopted to replace all the coarse aggregate and part of the fine aggregate, the density of the prepared seawater sea sand concrete is greatly reduced, the dead weight of a concrete structure is reduced, and therefore the seawater sea sand concrete can be applied to some large-span bridges or buildings sensitive to the dead weight of the structure.
本发明公开了一种轻质超高性能海水海砂混凝土及其制备方法。按质量份计，该海水海砂混凝土包括水泥31.74～36.90份，粉煤灰7.44～8.65份，硅灰7.84～9.11份，陶砂5.4～27.35份，海砂4.70～40.38份，海水4.43～5.53份，减水剂0.74～0.92份，镀铜钢纤维6.15～7.15份。本发明剔除了现有混凝土材料中常用的碎石等粗骨料，采用陶砂作为粗骨料和细骨料，海砂作为细骨料，有利于提高混凝土的密实度和整体性，减少了混凝土内部的缺陷，提高其力学性能；而且采用陶砂替代全部粗骨料和部分细骨料后，使得制备的海水海砂混凝土密度大幅降低，减小了混凝土结构的自重，从而能应用于一些对结构自重比较敏感的大跨度桥梁或者建筑物。
Lightweight ultrahigh-performance seawater and sea sand concrete and preparation method thereof
一种轻质超高性能海水海砂混凝土及其制备方法
CAO YUGUI (author) / CHEN MIHUA (author) / LIU YAOFENG (author) / WANG KUO (author) / LUO YUNFENG (author)
2023-04-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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